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Microsoft 070-457 Exam Syllabus Topics:

Microsoft Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1 Sample Questions:

Question 1

You have a database that contains the tables shown in the exhibit. (Click the Exhibit button).

You need to create a query for a report. The query must meet the following requirements:
NOT use object delimiters.
Return the most recent orders first.
Use the first initial of the table as an alias.
Return the most recent order date for each customer.
Retrieve the last name of the person who placed the order.
Return the order date in a column named MostRecentOrderDate that appears as the last column in the report.
The solution must support the ANSI SQL-99 standard.
Which code segment should you use?
To answer, type the correct code in the answer area.

A. select C.Lastname, P.MostRecentOrderDate from customers AS C inner join ( select customID, MostRecentOrderDate=max(orderDate) from orders group by customID
)P
on C.customerID=P.CustomerID
order by P.MostRecentOrderDate desc
B. SELECT LastName, O.OrderDate AS MostRecentOrderDate FROM Customers AS C INNER JOIN Orders AS O ON CustomerID = O.CustomerID ORDER BY O.OrderDate DESC
C. SELECT c.CustomerID --optional c.LastName, max(o.OrderDate) 'MostRecentOrderDate' FROM Customer c LEFT OUTER JOIN Orders o ON o.CustomerID = c.CustomerID GROUP BY c.CustomerID, c.LastName ORDER BY 3 DESC

Question 2

You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly. You discover that during reads, the transaction experiences blocking from concurrent updates. You need to ensure that throughout the transaction the data maintains the original version. What should you do?

A. Add a HASH hint to the query.
B. Enable the optimize for ad hoc workloads option.
C. Include a SET FORCEPLAN ON statement before you run the query.
D. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.
E. Add a FORCESCAN hint to the Attach query.
F. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.
G. Add a LOOP hint to the query.
H. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.
I. Include a SET STATISTICS PROFILE ON statement before you run the query.
J. Add a FORCESEEK hint to the query.
K. Add an INCLUDE clause to the index.
L. Cover the unique clustered index with a columnstore index.
M. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.
N. Add a columnstore index to cover the query.

Question 3

You generate a daily report according to the following query:

You need to improve the performance of the query. What should you do?

A. Drop the UDF and rewrite the report query as follows:
SELECT c.CustomerName
FROM Sales.Customer c
WHERE NOT EXISTS (
SELECT s.OrderDate
FROM Sales.SalesOrder
WHERE s.OrderDate > DATEADD(DAY, -90, GETDATE())
AND s.CustomerID = c.CustomerID)
B. Drop the UDF and rewrite the report query as follows:
WITH cte(CustomerID, LastOrderDate) AS ( SELECT CustomerID, MAX(OrderDate) AS [LastOrderDate] FROM Sales.SalesOrder GROUP BY CustomerID
)
SELECT c.CustomerName
FROM cte
INNER JOIN Sales.Customer c
ON cte.CustomerID = c.CustomerID
WHERE cte.LastOrderDate < DATEADD(DAY, -90, GETDATE())
C. Drop the UDF and rewrite the report query as follows:
SELECT DISTINCT c.CustomerName
FROM Sales.Customer c
INNER JOIN Sales.SalesOrder s
ON c.CustomerID = s.CustomerID
WHERE s.OrderDate < DATEADD(DAY, -90, GETDATE())
D. Rewrite the report query as follows:
SELECT c.CustomerName
FROM Sales.Customer c
WHERE NOT EXISTS (SELECT OrderDate FROM Sales.ufnGetRecentOrders(c.
CustomerID, 90))
Rewrite the UDF as follows:
CREATE FUNCTION Sales.ufnGetRecentOrders(@CustomerID int, @MaxAge datetime)
RETURNS TABLE AS RETURN (
SELECT OrderDate
FROM Sales.SalesOrder
WHERE s.CustomerID = @CustomerID
AND s.OrderDate > DATEADD(DAY, -@MaxAge, GETDATE())

Question 4

You create an availability group that has replicas named HA/Server01 and HA/Server02. Currently, HA/ Server01 is the primary replica. You have multiple queries that read data and produce reports from the database. You need to offload the reporting workload to the secondary replica when HA/Server01 is the primary replica. What should you do?

A. Set the Availability Mode property of HA/Server01 to Asynchronous commit.
B. Set the Connections in Primary Role property of HA/Server01 to Allow read/write connections.
C. Set the Availability Mode property of HA/Server02 to Asynchronous commit.
D. Set the Readable Secondary property of HA/Server02 to Read-intent only.

Question 5

You develop a database for a travel application. You need to design tables and other database objects. You create a view that displays the dates and times of the airline schedules on a report. You need to display dates and times in several international formats. What should you do?

A. Use the DATETIMEOFFSET data type.
B. Use an appropriate collation.
C. Use the CAST function.
D. Use the TODATETIMEOFFSET function.
E. Use the DATETIME2 data type.
F. Use the DATE data type.
G. Use the DATETIME data type.
H. Use the VARBINARY data type.
I. Use the FORMAT function.
J. Use a user-defined table type.

Solutions: